Networking-- Protocols and their functions.

SOME IMPORTANT PROTOCOL AND THEIR WORK

• ICMP (Internet Control message Protocol) - For connection troubleshooting.
• ARP (Address Resolution Protocol) Used to resolve IP to MAC address.
• RARP( Reverse Address Resolution Protocol) Used to resolve MAC to IP.
• DHCP( Dynamic Host Configuration Protocol ) Used to provide automatic IP address
• HTTP (Hyper Text Transfer Protocol ) Used to access web pages from browsers.
• SMB ( Service Message Block ) Used to share resources for windows PCs.
• NFS ( Network File System ) Used to share resources between windows and Unix OS.
• IGMP (Internet Group Message Protocol ) Used to send messages to multiple hosts .
• SMTP ( Simple Mail Transfer Protocol ) Used to send email.
• POP ( Post Office Protocol ) Used to receive mail
• IMAP ( Internet Message Access Protocol ) Used to receive mail.
• NNTP ( Network News Transfer Protocol ) Used to send news to a group
• NTP( Network Time Protocol ) Used to update time of all network devices.
• FTP ( File Transfer Protocol ) Used to download and upload files in intranet or internet.
• TFTP ( Trivial File Transfer Protocol ) Used to download and upload files but less secure than FTP
• RDP ( Remote Desktop Protocol ) Used to access remote desktop
• TCP ( Transmission Control Protocol ) Used to deliver data from one device to another .
• UDP ( User Data gram protocol ) Used to deliver data but it is connection less
• RIP ( Routing Information Protocol ) Used for Dynamic Routing.
• OSPF ( Open Shortest Path First ) Used for Dynamic Routing.
• BGP ( Border Gateway Protocol ) Used for Routing between two AS.
• IS-IS ( Intermediate System to Intermediate System) Use for routing.
• PPTP ( Point to Point Tunneling Protocol ) Used for tunneling in VPN.
• L2TP ( Layer 2 Tunneling Protocol ) Used for tunneling.
• SSTP ( Secure Socket Tunneling Protocol ) Used for tunneling
• CHAP ( Challenged Handshake Authentication Protocol ) Used for authentication.
• PPP ( Point to Point Protocol ) Used for frmaing.
• STP (Spanning Tree Protocol ) Used to prevent loop in switches.
• VTP (Virtual Trunking Protocol ) Used for trunking in switches.